Method of closing packages



Oct. 26 1926.

' G. W. GWINN METHOD OF CLOSING PACKAGES Filed Nov. 10. 1923 INVENTOR /,%m

ATTORNEY Patented Oct. 26, 1926.

uurren stares PATENT OFFICE.

GEORGE W. GWINN, OF BROOKLYN, NEW YORK, ASSIGNOR TO AMERICAN MACHINE & FOUNDRY COMPANY, A CORPORATION OF NEW JERSEY.

METHOD OF CLOSING PACKAGES.

Application filed November 10, 1923. Serial No. 673,870.

This invention relates to a method of closing packages, particularly packages of manufactured tobacco.

Manufactured tobacco, being extremely hygroscopic, and containing the proper amount of moisture when enclosed in packages for the market, should be protected from the effects of a dearth or from an excess of moisture in the atmosphere. This is commonly done by enclosing the tobacco in metal containers, or in tin-foil within an outer wrapper of paper. Both of these methods are expensive, however, and the main object of the present invention is the production of a method as eilicient as the old methods, but more economical. The invention consists in certain steps followed in enclosing the tobacco in packages, which will be hereinafter fully described and then specifically pointed out in the claims hereunto appended. V

In the accompanying drawings, which form a part of this specification and in which like characters of reference indicate the same or like parts, Fig. 1 is a plan view of a blank of flexible material such as paper, from which a tray is formed to be used in closing the packages; Fig". 2 illustrates a forming block with a blank partly folded on it; Fig. 3 illustrates the same forming block with the blank completely formed thereon; Fig. 4 is a perspec tive View of the forming block, the formed tray, and an opened package; Fig. illustrates a package with the tray inserted; and Figs. 6, 7 and 8 illustrate successive steps taken in folding the walls of the tray and the outer wrapper down together on the package contents.

Referring to the drawings, 9 indicates a blank of flexible material such as paper.

This blank is folded over a forming block 10, as clearly shown in Figs. 2 and 3, to form a shallow tray 11. This tray is then inserted in the open end of a package of tobacco, the paper wrapper of which is designated by the reference character 12. lVhen so inserted, the walls of the tray are upstanding in close contact with the outer wrapper 12, as clearly shown in Fig. 5. The walls of the tray 11 and the outer wrapper are then folded down together on the package contents, as shown in Figs. 6, 7 and 8.

This method of closing results in effectually sealing the package and protecting its contents against changes in the moisture content of the atmosphere; and the material used is much less expensive than the metallic containers or the tin-foil wrappers now in common use.

It will be readily ui'iderstood that each end of the package may be closed in the same manner.

What is claimed is:

1.. A package closure comprising an outer wrapper and an inserted tray of flexible material which rests on the top of the contents of the package, the opposite walls of said wrapper and said tray being folded down together on the bottom part of said tray;

2. A package closure comprising' an outer w upper of wrapping; paper and an inserted tray of like material. which rests on the top of the contents of the package, the opposite walls of said wrapper and said tray being nearly of the same extent and folded down together on the bottom part of said tray.

In testimony whereof, I have signed my name to this specification.

snore-n w; GWINN, 

